Feed-water heater.



Patened Jan. 2, |9005.

L. C. LNPHER.

FEED WATER HEATER.

(Application led June 30, 1899.)

(N0 Windel.)

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IilWlS C. LANPHEAR, OF BOSTON, MASSACHUSETTS.

FEDMWATER HEATER.

SPECIFICATION forming part of Letters Patent No. 640,475, dated January 2, 1900.

Application tiled June 30,1899.

T0 @ZZ roh/om, it may con/ecru.-

Be it known that l, Iinwrs C. LANPHEAR, of Boston, in the county of Suffolk and State of lilassachusettsdiave invented certain new and useful Improvements in @oiled-Tube Feed- "Water IIeaters, of which the following' is a specification.

This invention has relation to feed-water heaters; and it has for its object to provide a device of the character specified by means of which the heat units in the steam may be entirely absorbed by the feed-water.

In feed-water heaters as heretofore constructed, in which coils were employed for the feed-water, the steam was introduced in the casing at one side or end and withdrawn from the other side or end, so that it traversed a practically straight path past the coils, and consequently' the steam was withdrawn before the heat unit-s were absorbed by the feedwater.

My present invention therefore consists of a feed-water heater comprising a casing and a coiled pipe or pipes extending through said casing from end to end for the feed-water, an inlet for the steam arranged at one end, an outlet consisting of a pipe projecting down into the casing, terminating' a short distance from the inlet, and a suitable bathe-plate on the end of the said pipe for deilecting the current of steam and causing it to be thrown outward toward the walls of the casing and to then ilow backward along the pipe and to subsequently pass out of the latter. In order to obtain the best etliciency, the feed-water should obviously be admitted at the lowest end of the coil and delivered from the highest end.

Referring to the drawing, which portrays one embodiment of my invention and which represents a longitudinal vertical section through the heater, it will be seen that I have provided a casing consisting of a cylinder l, closed at its upper end by a head or top plate 9 and atits bottom by a head or bottom plate 3. These three parts are secured together in any suitable way, as by rivets or bolts, and the cylinder 1 is surrounded by a concentric cylinder 4. of relatively thin metal to form a deadair space 5. This outer shell 4c is not essential and may be omitted, if desired.

The coils for the feed-water are indicated at Serial No. 722,378. (No model.)

6 and 7, respectively, being arranged concentrically and extending from the manifold 8 at the lower end of the casin g to the manifold 9 at the upper end. The inlet 10 for the feed-wa ter h eater extends through a suitable packing 11 inthe bottom plate 3 to the manifold S, while the outlet 12 extends to the manifold 9 outward through the packing 13 in the top plate 2.

The steam-inlet is indicated at 14 and is arranged in the center of the lower cylinderhead or bottom plate 3, the exhaust-pipe 15 from the engine leading thereinto, as shown. An annular flange 16 surrounds the inlet to prevent the drip from flowing into the pipe 15. The exhaust-outlet consists of a pipe 17, which is passed through the upper cylinderhead 2 and through a suitable packing, (indicated conventionally at 1S.) This pipe 17 may be connected to the cylinder in any suitable way and may end at the packing and be formed for connection with an exhaust-pipe which leads to the atmosphere. The said pipe is arranged in the center of the coils, and it extends toward the bottom plate 3 for a considerable distance, its end being located at any suitable point between the middle of the casing and the bottom plate 3. To the lower end of the pipe 17 is attached a baffle-plate 19, which, as shown, is in the form of an inverted cone, with its apex in the central line of the inlet 1l. This baffle-plate is secured in place by hangers 20, which are attached to the pipe 17 and to the bathe-plate by bolts or rivets7 so that there is considerable space botween the end of the pipe and the inner wall of the plate to admit of the passage of the steam or vapor into the outlet-pipe 17. At 21 there is a drip-pipe which extends through the bottom plate 3, and from the apex of the conical baffle-plate 19 there is a drip-pipe 22, which is extended laterally to prevent the drip from flowing through the inlet 14. Then steam is admitted through the inlet, it iin-- pinges upon the outer or lower walls of the baffle-plate and is deflected or spread, so that it takes the course illustrated by the arrows upon the drawings-that is to say, it passes outwardly and upwardly in a current near the walls of the cylinder until it reaches a point near the cylinder-head 2, when it is diverted downwardly and follows the pipe 17 un- IOO til it reaches the mouth thereof, after which it passes upward through the said pipe to the atmosphere. The steam is obliged to take this course, because its only escape is formed by the passage between the lower end of the outlet-pipe and the batfie-plate which is adjacent to the said loWerend, said bafe-plate preventing the direct passage of steam, however, from the inlet 14 to the outlet-pipe 17 and causing it to pass up and then down, as just described. By the time that the steam reaches the pipe 17 it has' fully enveloped the coils, so that the heat units have been practically all absorbed and the exhaust in the pipe 17 is in the form of vapor or low-tension steam.

As shown, the casing is supported by legs or standards 23; but, as Will be obvious4 to those skilled in the art to which this invention relates, the supporting devices, as Well as other parts which I have described, may be varied in accordance With any particular requirements without departing from the spirit and scope of the invention.

Having thus described the nature of my invention and explained a Way of constructing and using the same,although Without attempting to set forth all the forms in which it may be made or al1 the modes of its use, I noW declare that What I claim is- 1. Afeed-Water heater comprising a casing, pipes for the feed-Water, extending through said casing, a steam-inlet, and a steam-outlet consisting of a pipe extending into the casing and having a baffle-plate on its inner end in the path of the steam from the inlet, the escape-passage into the outlet-pipe being adjacent to the said bafIie-plate, substantially as described.

2. Afeed-Water heater comprising a casing, pipes for the feed-Water, extending through said casing, a steam-inlet, and a steam-outlet consisting of a pipe projected into the casing and having on its end a conical deflectingplate arranged to intercept the steam Which passes in through the inlet, the escape-passage into the outlet-pipe being ad jacent to the said baiiie-plate.

3. A feed-Water heater comprising a cylindrical casing,feed-Water pipes extending from end to end of said casing, a steam-inlet at one end of said casing, a steam-outlet consisting of a pipe projected inwardly from the other end of said casing, and ending a relatively short distance from the inlet, an inverted conical bafIie-plate, connected to the end of the said pipe but separated therefrom to form a steampassage, and a drip-pipe leading later ally from the apex of said baffle-plate.

In testimony whereof I have aixed my signature in presence of two Witnesses.

LEWIS C. LANPHEAR.

Witnesses:

MARCUS B. MAY, P. W'. PEZZETTL 

